How to Manage Pests

Pests in Gardens and Landscapes

Physiological shothole

Physiological shothole is an environmental disorder and does not warrant any chemical control. It is
thought to be caused by stress. Physiological shothole causes reddish or purplish brown spots about 0.10 inch in diameter on leaves.
The spots expand and their centers turn brown. Tiny, dark specks form in the brown centers, especially
on buds. Spots on young leaves have a narrow, light green or yellow margin and their centers often fall
out as leaves expand, leaving "shot holes."

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.